Please join our mailinglist or Skype channel. Multidimensional array support involves some more heavy lifting in the compiler than just implementing some plugs. When you start on this, we'll need some refactorings and it should then be not too hard. Just start
asking on the mailing list....

Regards,

Matthijs ter Woord

PS. It's great to hear that people from the community are interested in implementing missing features!